The U.S. crude benchmark rose 2.9% to settle at $49.37 a barrel on the New York Mercantile Exchange, while the global Brent contract gained 3% to end at $50.65 a barrel on the ICE Futures Europe. Both contracts were rebounding after a six-day losing streak.

The California-based fund manager, which is among the largest shareholders of natural resources groups including BP Plc, Total SA, Glencore Plc and Chevron Corp. through dozens of funds, believes that $50 a barrel isn’t high enough to stimulate the increase in supply needed to meet future oil demand.

Rosneft and Consortium of Indian Companies led by Oil India Limited along with Indian Oil Corporation Ltd. and Bharat PetroResources have signed the agreement of sale and purchase of 23.9% in Vankorneft and the shareholders agreement at the XX St. Petersburg International Economic Forum.

"Рыночные инструменты работают. Общее недоинвестирование — порядка 550 миллиардов долларов за последние 3 года. Это огромный уход инвестиций. Мы видим даже риски того, что через несколько лет возникнет недостаток нефти из-за недоинвестирования и растущего спроса", - отметил Министр энергетики.

Стоимость добычи нефти в России – $2 за баррель. Увеличить добычу нефти в 2015 г. удалось благодаря новым проектам, которые были запущены с поддержкой государства. В России уникальная ресурсная база, отметил Сечин. Это позволит удержать добычу стабильной до 2035 г.

Brent crude futures' front-month contract LCOc1 settled up$1.98, or 4.2 percent, at $49.17 a barrel. The front-month in U.S. crude's West Texas Intermediate (WTI) futures CLc1 rose $1.77, or 3.8 percent, to settle at $47.98. It fell $1.80 in the previous session.

Crude oil prices rallied to a 2016 high above $51/bbl in June, stoked by continuing outages in Nigeria and Canada as well as a steady decline in US oil production. May marked the third straight month of average price rises in Brent and WTI futures.

Venezuela has borrowed over $50 billion from China under the financing arrangement created by late socialist leader Hugo Chavez in 2007, in which a portion of its crude and fuel sales to the world's second-biggest economy are used to pay down loans.

Iran is regaining market share at a faster pace than analysts had projected since sanctions were lifted in January, helped by securing more tankers through a temporary shipping insurance fix.

The August Brent crude contract on London’s ICE fell 52¢ to $48.93/bbl, its lowest settlement since June 3. The September contract was also down 49¢ to $50.33/bbl. The July gas oil contract settled at $443.50/tonne on June 14, down $9.75.

PetroChina Co., the nation’s biggest producer, said in March it expects oil and gas output to fall the first time in 17 years as it shuts fields that have “no hope” of turning a profit, while Cnooc Ltd. sees output slipping as much as 5.2 percent this year.

The decline of 120,000 barrels a day, to 2.37 million barrels a day, underscores the inability of state energy company Petróleos de Venezuela SA to maintain oil-industry investments, as the region’s largest petroleum exporter suffers from a debilitating cash crunch, widespread food shortages and civil unrest.

Brent crude oil futures LCOc1 fell to $49.74 per barrel, at 1327 GMT, down 80 cents, after trading as low as $49.61.

OPEC predicted that the global oil market will be more balanced in the second half of this year as demand rises and rival supplies falter, echoing views expressed by ministers at the group’s meeting this month.

“There are still no fundamental factors for growth in oil prices,” Siluanov said. “We should plan our financial resources on that basis.”